You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
453 lines
12 KiB
453 lines
12 KiB
/*
|
|
* Kivio - Visual Modelling and Flowcharting
|
|
* Copyright (C) 2000-2001 theKompany.com & Dave Marotti
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
#include "kivio_common.h"
|
|
#include "kivio_connector_point.h"
|
|
#include <kdebug.h>
|
|
#include <tqstringlist.h>
|
|
#include <math.h>
|
|
#include <KoPoint.h>
|
|
#include <KoRect.h>
|
|
|
|
/**
|
|
* Read a floating point value from a @ref TQDomElement.
|
|
*
|
|
* @param e The @ref TQDomElement to read from
|
|
* @param att The attribute to locate
|
|
* @param def The default value to return if the attribute is not found
|
|
*
|
|
* This will read a floating point attribute from a @ref TQDomElement, and
|
|
* if it is not found, return the default value.
|
|
*/
|
|
float XmlReadFloat( const TQDomElement &e, const TQString &att, const float &def)
|
|
{
|
|
// Check if this value exists, if not, return the default
|
|
if( e.hasAttribute( att )==false )
|
|
return def;
|
|
|
|
// Read the attribute
|
|
TQString val = e.attribute( att );
|
|
bool ok=false;
|
|
|
|
// Make sure it is a floating point value. If not, return the default
|
|
float fVal = val.toFloat( &ok );
|
|
if( !ok )
|
|
{
|
|
kdDebug(43000) << "Invalid XML-value read for " << att.ascii() << ", expected float\n" << endl;
|
|
return 1.0;
|
|
}
|
|
|
|
// Return the value
|
|
return fVal;
|
|
}
|
|
|
|
|
|
/**
|
|
* Write a floating point value to a @ref TQDomElement
|
|
*
|
|
* @param e The @ref TQDomElement to write to
|
|
* @param att The attribute to write
|
|
* @param val The value of the attribute to write
|
|
*
|
|
* This will write a floating point value to a @ref TQDomElement.
|
|
*/
|
|
void XmlWriteFloat( TQDomElement &e, const TQString &att, const float &val )
|
|
{
|
|
e.setAttribute( att, (double)val );
|
|
}
|
|
|
|
|
|
/**
|
|
* Read an int value from a @ref TQDomElement.
|
|
*
|
|
* @param e The @ref TQDomElement to read from
|
|
* @param att The attribute to locate
|
|
* @param def The default value to return if the attribute is not found
|
|
*
|
|
* This will read an int attribute from a @ref TQDomElement, and
|
|
* if it is not found, return the default value.
|
|
*/
|
|
int XmlReadInt( const TQDomElement &e, const TQString &att, const int &def)
|
|
{
|
|
// Check if this value exists, if not, return the default
|
|
if( e.hasAttribute( att )==false )
|
|
return def;
|
|
|
|
// Read the attribute
|
|
TQString val = e.attribute( att, "1" );
|
|
bool ok=false;
|
|
|
|
// Make sure it is a floating point value. If not, return the default
|
|
int iVal = val.toInt( &ok );
|
|
if( !ok )
|
|
{
|
|
kdDebug(43000) << "Invalid XML-value read for " << att << " expected int\n" << endl;
|
|
return 1;
|
|
}
|
|
|
|
// Return the value
|
|
return iVal;
|
|
}
|
|
|
|
|
|
/**
|
|
* Write a int value to a @ref TQDomElement
|
|
*
|
|
* @param e The @ref TQDomElement to write to
|
|
* @param att The attribute to write
|
|
* @param val The value of the attribute to write
|
|
*
|
|
* This will write an int value to a @ref TQDomElement.
|
|
*/
|
|
void XmlWriteInt( TQDomElement &e, const TQString &att, const int &val )
|
|
{
|
|
e.setAttribute( att, (int)val );
|
|
}
|
|
|
|
|
|
/**
|
|
* Read an uint value from a @ref TQDomElement.
|
|
*
|
|
* @param e The @ref TQDomElement to read from
|
|
* @param att The attribute to locate
|
|
* @param def The default value to return if the attribute is not found
|
|
*
|
|
* This will read an uint attribute from a @ref TQDomElement, and
|
|
* if it is not found, return the default value.
|
|
*/
|
|
uint XmlReadUInt( const TQDomElement &e, const TQString &att, const uint &def)
|
|
{
|
|
// Check if this value exists, if not, return the default
|
|
if( e.hasAttribute( att )==false )
|
|
return def;
|
|
|
|
// Read the attribute
|
|
TQString val = e.attribute( att, "1" );
|
|
bool ok=false;
|
|
|
|
// Make sure it is a floating point value. If not, return the default
|
|
uint iVal = val.toUInt( &ok );
|
|
if( !ok )
|
|
{
|
|
kdDebug(43000) << "Invalid XML-value read for " << att.ascii() << ", expected uint\n" << endl;
|
|
return 1;
|
|
}
|
|
|
|
// Return the value
|
|
return iVal;
|
|
}
|
|
|
|
|
|
/**
|
|
* Write an uint value to a @ref TQDomElement
|
|
*
|
|
* @param e The @ref TQDomElement to write to
|
|
* @param att The attribute to write
|
|
* @param val The value of the attribute to write
|
|
*
|
|
* This will write an uint value to a @ref TQDomElement.
|
|
*/
|
|
void XmlWriteUInt( TQDomElement &e, const TQString &att, const uint &val )
|
|
{
|
|
e.setAttribute( att, (uint)val );
|
|
}
|
|
|
|
|
|
/**
|
|
* Read a @ref TQString from a @ref TQDomElement.
|
|
*
|
|
* @param e The @ref TQDomElement to read from
|
|
* @param att The attribute to locate
|
|
* @param def The default value to return if the attribute is not found
|
|
*
|
|
* This will read a TQString attribute from a @ref TQDomElement, and
|
|
* if it is not found, return the default value.
|
|
*/
|
|
TQString XmlReadString( const TQDomElement &e, const TQString &att, const TQString &def )
|
|
{
|
|
// Check if the attribute exists, if not, return the default
|
|
if( e.hasAttribute( att )==false )
|
|
return TQString(def);
|
|
// Otherwise return the attribute
|
|
else return e.attribute( att );
|
|
}
|
|
|
|
|
|
/**
|
|
* Write a TQString to a @ref TQDomElement
|
|
*
|
|
* @param e The @ref TQDomElement to write to
|
|
* @param att The attribute to write
|
|
* @param val The value of the attribute to write
|
|
*
|
|
* This will write a TQString to a @ref TQDomElement.
|
|
*/
|
|
void XmlWriteString( TQDomElement &e, const TQString &att, const TQString &val )
|
|
{
|
|
e.setAttribute( att, val );
|
|
}
|
|
|
|
|
|
/**
|
|
* Read a TQColor value from a @ref TQDomElement.
|
|
*
|
|
* @param e The @ref TQDomElement to read from
|
|
* @param att The attribute to locate
|
|
* @param def The default value to return if the attribute is not found
|
|
*
|
|
* This will read a TQColor attribute from a @ref TQDomElement, and
|
|
* if it is not found, return the default value.
|
|
*/
|
|
TQColor XmlReadColor( const TQDomElement &e, const TQString &att, const TQColor &def)
|
|
{
|
|
// Check if this value exists, if not, return the default
|
|
if( e.hasAttribute( att )==false )
|
|
return def;
|
|
|
|
// Read the attribute
|
|
TQString val = e.attribute( att, "1" );
|
|
bool ok=false;
|
|
TQColor newColor;
|
|
|
|
if( val.contains("#") ) // Is it #RRGGBB format?
|
|
{
|
|
newColor.setNamedColor(val);
|
|
return newColor;
|
|
}
|
|
|
|
// Otherwise it is a #xxxxxxxx color (rgb format)
|
|
// Make sure it is a uint value. If not, return the default
|
|
uint iVal = val.toUInt( &ok );
|
|
if( !ok )
|
|
{
|
|
kdDebug(43000) << "Invalid XML-value read for " << att.ascii() << ", expected TQColor" << endl;
|
|
return 1;
|
|
}
|
|
|
|
// Return the value
|
|
return TQColor(iVal);
|
|
}
|
|
|
|
|
|
/**
|
|
* Write a TQColor value to a @ref TQDomElement
|
|
*
|
|
* @param e The @ref TQDomElement to write to
|
|
* @param att The attribute to write
|
|
* @param val The value of the attribute to write
|
|
*
|
|
* This will write a TQColor value to a @ref TQDomElement.
|
|
*/
|
|
void XmlWriteColor( TQDomElement &e, const TQString &att, const TQColor &val )
|
|
{
|
|
// Write it out in #RRGGBB format
|
|
e.setAttribute( att, val.name() );
|
|
}
|
|
|
|
|
|
/**
|
|
* Read a double value from a @ref TQDomElement.
|
|
*
|
|
* @param e The @ref TQDomElement to read from
|
|
* @param att The attribute to locate
|
|
* @param def The default value to return if the attribute is not found
|
|
*
|
|
* This will read a double attribute from a @ref TQDomElement, and
|
|
* if it is not found, return the default value.
|
|
*/
|
|
double XmlReadDouble( const TQDomElement &e, const TQString &att, const double &def)
|
|
{
|
|
// Check if this value exists, if not, return the default
|
|
if( e.hasAttribute( att )==false )
|
|
return def;
|
|
|
|
// Read the attribute
|
|
TQString val = e.attribute( att, "1.0" );
|
|
bool ok=false;
|
|
|
|
// Make sure it is a floating point value. If not, return the default
|
|
double dVal = val.toDouble( &ok );
|
|
if( !ok )
|
|
{
|
|
kdDebug(43000) << "Invalid XML-value read for ," << att.ascii() << " expected double" << endl;
|
|
return 1.0;
|
|
}
|
|
|
|
// Return the value
|
|
return dVal;
|
|
}
|
|
|
|
|
|
/**
|
|
* Write a double value to a @ref TQDomElement
|
|
*
|
|
* @param e The @ref TQDomElement to write to
|
|
* @param att The attribute to write
|
|
* @param val The value of the attribute to write
|
|
*
|
|
* This will write a double value to a @ref TQDomElement.
|
|
*/
|
|
void XmlWriteDouble( TQDomElement &e, const TQString &att, const double &val )
|
|
{
|
|
e.setAttribute( att, (double)val );
|
|
}
|
|
|
|
|
|
#define WHICH_TQUAD( vertex, hitPos ) \
|
|
( (vertex.x() > hitPos->x()) ? ((vertex.y() > hitPos->y()) ? 1 : 4 ) : ((vertex.y() > hitPos->y())?2:3))
|
|
|
|
#define X_INTERCEPT( point1, point2, hitY ) \
|
|
(point2.x() - (((point2.y()-hitY)*(point1.x()-point2.x()))/(point1.y()-point2.y())))
|
|
|
|
/**
|
|
* Determines if a point is inside a given polygon
|
|
* @param points An array of points representing the polygon
|
|
* @param numPoints The number of points in the array
|
|
* @param hitPos The point we are to check
|
|
*
|
|
* Code taken from Game Developer magazine page 22, January 1999 issue
|
|
* Explaination:
|
|
*
|
|
* A better strategy is to divide the polygon into quadrants centered on the test point.
|
|
* Start at the first vertex in the polygon and set a counter to 0. Anytime an edge crosses
|
|
* from one quadrant to the next, add one to the counter if it crosses clockwise around the
|
|
* test point and subtract one if it crosses counter-clockwise. If the edge crosses diagonally
|
|
* across two quadrants, you need to determine which side of the test point it crossed, and then
|
|
* either add or subtract 2.
|
|
*
|
|
* Quad layout:
|
|
* 1 2
|
|
* 4 3
|
|
*/
|
|
bool PointInPoly( KoPoint *points, int numPoints, KoPoint *hitPos )
|
|
{
|
|
int edge, next;
|
|
int quad, next_quad, delta, total;
|
|
|
|
edge = 0;
|
|
|
|
quad = WHICH_TQUAD( points[ edge ], hitPos );
|
|
total = 0; // count of absolute sectors crossed
|
|
|
|
// Loop through all the vertices
|
|
do {
|
|
next = (edge + 1) % numPoints;
|
|
next_quad = WHICH_TQUAD( points[ next ], hitPos );
|
|
|
|
// Calculate how many quads have been crossed
|
|
delta = next_quad - quad;
|
|
|
|
// Special case to handle crossings of more than one quad
|
|
switch( delta )
|
|
{
|
|
case 2: // If we crossed the middle, figure out if it was clockwise or counter clockwise
|
|
case -2: // Use the X-position at the hit point to determine which way around
|
|
if( X_INTERCEPT( points[edge], points[next], hitPos->y() ) > hitPos->x() )
|
|
delta = -delta;
|
|
break;
|
|
|
|
case 3: // Moving 3 quads is like moving back 1
|
|
delta = -1;
|
|
break;
|
|
|
|
case -3: // Moving back 3 is like moving forward 1
|
|
delta = 1;
|
|
break;
|
|
}
|
|
|
|
// Add in the delta
|
|
total += delta;
|
|
quad = next_quad;
|
|
edge = next;
|
|
} while( edge != 0 );
|
|
|
|
|
|
// After everything, if the total is 4, then we are inside
|
|
if((total==4) || (total==-4))
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
KoRect XmlReadRect( const TQDomElement &e, const TQString &att, const KoRect &def )
|
|
{
|
|
// Check if this value exists, if not, return the default
|
|
if( e.hasAttribute( att )==false )
|
|
return def;
|
|
|
|
// Read the attribute
|
|
TQString val = e.attribute( att );
|
|
|
|
if (val.find("[") == 0 && val.find("]") == (int)val.length()-1) {
|
|
val.remove(0,1);
|
|
val.remove(val.length()-1,1);
|
|
TQStringList vlist = TQStringList::split(",",val);
|
|
if (vlist.count() == 4) {
|
|
bool allOk = true;
|
|
bool ok = false;
|
|
|
|
double x = vlist[0].toDouble(&ok);
|
|
allOk = allOk & ok;
|
|
|
|
double y = vlist[1].toDouble(&ok);
|
|
allOk = allOk & ok;
|
|
|
|
double w = vlist[2].toDouble(&ok);
|
|
allOk = allOk & ok;
|
|
|
|
double h = vlist[3].toDouble(&ok);
|
|
allOk = allOk & ok;
|
|
|
|
if (allOk)
|
|
return KoRect(x, y, w, h);
|
|
}
|
|
}
|
|
|
|
return def;
|
|
}
|
|
|
|
void XmlWriteRect( TQDomElement &e, const TQString &att, const KoRect &val )
|
|
{
|
|
e.setAttribute( att, TQString("[%1,%2,%3,%4]").arg(val.x()).arg(val.y()).arg(val.width()).arg(val.height()) );
|
|
}
|
|
|
|
|
|
float shortestDistance( KivioConnectorPoint *pStart, KivioConnectorPoint *pEnd, KivioConnectorPoint *q )
|
|
{
|
|
float uX, uY;
|
|
float pqX, pqY;
|
|
|
|
uX = pStart->x() - pEnd->x();
|
|
uY = pStart->y() - pEnd->y();
|
|
|
|
pqX = pStart->x() - q->x();
|
|
pqY = pStart->y() - q->y();
|
|
|
|
float magTop = fabs(pqX*uY - (pqY*uX));
|
|
|
|
float magU = sqrt( uX*uX + uY*uY );
|
|
|
|
if( magU == 0.0f )
|
|
{
|
|
kdDebug(43000) << "shortestDistance() - SERIOUS ERROR: magU is 0.0f!\n";
|
|
return 10.0f;
|
|
}
|
|
|
|
return magTop / magU;
|
|
}
|